Channel Tunnel (1988–1994)
Britain and France jointly built a 31-mile rail tunnel under the English Channel, financed entirely by private capital with no government guarantees. The project ran roughly 80% over budget at about £4.65 billion and opened a year late.
The operating company, Eurotunnel, struggled financially for years and went through multiple debt restructurings before becoming profitable.
The tunnel carries millions of passengers and substantial freight annually, and Eurostar has reshaped travel between London, Paris, and Brussels — vindicating the underlying infrastructure thesis even as the financing structure failed.
The Channel Tunnel shows that high-speed rail megaprojects can be transformative even when the original financing model collapses — a useful frame for evaluating California's pivot away from federal funding toward state climate revenue.
